Rockwell Automation Publication ENET-UM004B-EN-P - November 2015 31
Configure an EtherNet/IP Communication Module Chapter 3
10. Click Disable BOOTP/DHCP.
The Status field shows a success message.
When power is recycled, the module uses the assigned configuration and
does not issue a BOOTP request.
To reset the module to the factory default settings, see
5069-AEN2TR
EtherNet/IP Adapter Reset Button on page 73.
Use DHCP Software
Dynamic Host Configuration Protocol (DHCP) software automatically assigns
IP addresses to client stations logging on to a TCP/IP network. DHCP is based
on BOOTP and maintains some backward compatibility. The main difference is
that BOOTP allows for manual configuration (static), while DHCP allows for
both static and dynamic allocation of network addresses and configurations to
newly attached modules.
Be cautious when using DHCP software to configure a module. A BOOTP
client, such as the EtherNet/IP communication modules, can start from a DHCP
server only if the DHCP server is written to handle BOOTP queries. This
condition is specific to the DHCP software package used. Consult your system
administrator to see if a DHCP package supports BOOTP commands and
manual IP allocation.
IMPORTANT
If you do not click Disable BOOTP/DHCP, on a power cycle, the host
controller clears the current IP configuration and begins sending
BOOTP requests again.
ATTENTION: The EtherNet/IP communication module must be assigned a
fixed network address. The IP address of this module must not be dynamically
provided. That is, do not use Dynamic as the Network Configuration Type. You
must use Static.
Failure to observe this precaution can result in unintended machine motion or
loss of process control.
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